〃 70. Spore of Mint brand (_Puccinia menthæ_) × 350. 〃 71. Portion of leaf of Earth-nut with brand (_Puccinia umbelliferarum_). 〃 72. Spore of Earth-nut brand (_Puccinia umbelliferarum_) × 320. 〃 73. Leaf of Ground-ivy with its brand (_Puccinia Glechomatis_). 〃 74. Spore of Ground-ivy brand (_Puccinia Glechomatis_) × 320. 〃 75. Pustule of brand surrounded by the ruptured epidermis, magnified. 〃 76. Portion of leaf and stem of Goatsbeard with brand. 〃 77. Spores of the same × 320. 〃 78. Portion of leaf of Willow-herb with its brand (_Puccinia pulverulenta_). 〃 79. Spores of Willow-herb brand (_Puccinia pulverulenta_) × 320. 〃 80. Leaf of Pennywort with brand (_Puccinia umbilici_). 〃 81. Spores of Pennywort-brand (_Puccinia umbilici_) × 320. 〃 82. Portion of leaf of Dandelion with its brand. 〃 83. Spores of Variable-brand (_Puccinia variabilis_) × 320. V. 84. Grain of Wheat infected with Fœtid smut (_Tilletia caries_). 〃 85. Longitudinal section of the same. 〃 86. Spores of Fœtid smut (_Tilletia caries_) mixed with delicate branching threads × 320. 〃 87. Spores of Fœtid smut in germination × highly. 〃 88. Sporidia of the first order borne on the germinating tubes of the fœtid smut (_Tilletia caries_) × highly. 〃 89. Sporidia of the first order, showing their transverse connection, × highly. 〃 90. Sporidia of the first order, producing sporidia of the second order, × highly. 〃 91. Sporidium of the second order in active germination. 〃 92. Deformed flower-head of Goatsbeard infested with smut (_Ustilago receptaculorum_). 〃 93. Floret removed, sprinkled with spores of the smut, enlarged. 〃 94. Spores of Goatsbeard smut (_Ustilago receptaculorum_) × 460. 〃 95. The same in active germination × 460 (_Tulasne_). 〃 96. Beaksedge (_Rhyncospora alba_) with its smut (_Ustilago Montagnei_). 〃 97. Spores of _Ustilago Montagnei_ × 460. 〃 98. Ear of Barley infected with smut (_Ustilago segetum_). 〃 99. Spores of Corn-smut (_Ustilago segetum_) × 460. 〃 100. Grass with its smut (_Ustilago hypodytes_). 〃 101. Spores of Grass-smut (_Ustilago hypodytes_). 〃 102. Flowers of Bladder-campion with anther smut (_Ustilago antherarum_).